I use this as the books say it is good for your heart. Heart trouble runs in my family, so I use it as a preventative...it breaks down fats, and your heart needs it. The other product, Acetyl L-Carnitine is the one for memory as it can get through the blood brain barrier. Just plain L-Carnitine I use for my heart. Gives you energy in the long run. I take 2 caps away from food, just before bed.